Two-sectioned room air conditioner construction cabinet

ABSTRACT

A two-sectioned room air conditioner cabinet including a top half section and bottom half section which cooperate when joined together by outwardly extending flanges formed on opposite sides adjacent the open ends to enclose the refrigeration and air handling assemblies therein. The top and bottom walls of the cabinet have opposed pairs of integrally molded retainer means including rubber-like bushings and pads designed in such a manner that when the two casing sections are locked together by elongated C-shaped clamps engaging the side flanges the compressor motor and fan motor housings are fixably retained in a cushioned manner within the cabinet.

United States Patent 1191 Paulick et al. 7

' 5 [4 June 25, 1974 TWO-SECTIONED ROOM AIR CONDITIONER CONSTRUCTIONCABINET [75] Inventors: David R. Paulick, Dayton; Emerson L.Wark,'Vandalia; William E. Koeppen, Kettering, all of Ohio [73]Assignee: General Motors Corporation,

Detroit, Mich.

[22] Filed: May 29, 1973 [21] Appl. No.: 364,901

[52] US. Cl. 312/101, 62/262, 98/94 AC [51] lnt. Cl. F25d23/08 [58]Field of Search 46/19, 21, 25, 26;

[56] References Cited UNITED STATES PATENTS 2,711,086 6/1955 Eilers98/94 AC X 2,752,215 6/1956 'Peiss 312/111 3,213,636 10/1965 MacLeod....

Nenadal 165/48 FOREIGN PATENTS OR APPLICATIONS 1,385,649 12/1964 France..312/lll Primary Examiner-Donald A. Griffin Attorney, Agent, orFirm-Edward! P. Barthel [57] ABSTRACT A two-sectioned room airconditioner cabinet including a top half section and bottom half sectionwhich cooperate when joined together by outwardly extending flangesformed on opposite sides adjacent the open ends to enclose therefrigeration and air handling assemblies therein. The top and bottomwalls of the cabinet have opposed pairs of integrally molded retainermeans including rubber-like bushings and pads designed in such a mannerthat when the two casing sections .are locked together by elongatedC-shaped clamps engaging the side flanges the compressor motorand fanmotor housings are fixably retained in a cushioned manner within thecabinet.

' 4 Claims, 9 Drawing Figures PATENTEDJUN25 m4 3.819.244

amen 2 BF 3 -I---------IIIIIIIIIIIIII v 5.2 m 228 I16 uzg zgePATENTEDmzs m4 3 9 4 SHEET 3 OF 3 TWO-SECTIONED ROOM AIR CONDITIONERCONSTRUCTION CABINET This invention relates to room air conditionercabinet construction and more specifically with the provision of anupper and lower sectioned cabinet, each half of which is formed from aunitary piece of plastic.

In room air conditioners comprising air handling and refrigerationsystems provided with a hermetic motorcompressor together with a motordriven fan and blower for circulating room air through the evaporatorand exhausting air through the condenser, the problem of cushioning therelatively heavy motor-compressor and fan motor within a molded plasticcabinetis present, requiring inexpensive means to reduce thetransmission of noises of the fan motor and motorcompressor to andamplified by the cabinet.

It is an object of the present invention therefore to provide animproved, compact and relatively lightweight room air conditioning unithaving a twosectioned, low profile cabinet withretainer means integrallyformed therein for cushioningly supporting the compressor motor and thefan motor housings therebetween when the two sections are lockedtogether.

It is another object of the invention to provide a twopiece molded roomair conditioner cabinet in which opposed pairs ofretainer means areprovided on the top and bottom of the cabinet for both themotorcompressor dome-like housing and the air handling motorcylindrical'shaped housing components incorporating rubber-like bushingsand motor mounting pads respectively, which may be readily assembled inconjunction with the components such that they are retained in apredetermined alignment during the assembly of the cabinet, whereby uponthe locking of the two sections together by elongated C-shaped clampmembers adapted to fit around adjacent flanges of the two sections, thecomponents are cushioningly retained in place.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the accompanyingdrawings, wherein a preferred form of the present invention is clearlyshown.

In the drawings: i

FIG. 1 is a perspective view of the air conditioning unit in assembledcondition;

FIG. 2 is a vertical section of the unit taken substantially on the line2--2 of FIG. 3;

FIG. 3'is a horizontal section taken substantially on the line 3-3 ofFIG. v2;

FIG. 4 'is'an enlarged fragmentary vertical section of the lower motorcompressor housing retainer;

FIG. 5 is an enlarged fragmentary vertical plan view of the outwardlyextending flanges formed on one side of the upper and lower sections;

FIG. 6 is a horizontal plan view taken substantially on the line 6-6 ofFIG. 2;

FIG. 7 is an enlarged fragmentary view taken substantially on the line7-7 of FIG. 4;

FIG. 8 is an enlarged fragmentary vertical section of the right handside flanges shown in their locked conditions; and

FIG. 9 is an enlarged perspective view of the upper fan motor supportpad.

Referring to FIG. 1 of the drawings, an air conditioningunit 10 of thepresent invention is shown which provides a two-piece casing assemblypreferably molded of synthetic plastic material, comprising an upperhalf or section 12 and a lowerhalf or section 14 adapted for enclosing arefrigeration assembly and an air handling assembly therein. Referringspecifically to FIGS. 1-3 and 6, the integrally molded casing lower half14 has a closed bottom 16, opposite side walls 18 and 20, opposite frontand rear walls 22 and 24 with turned-out horizontal side flanges 26 and28 extending along the side walls 18 and 20 at the open-end of thecasing lower half 14. The integrally molded casing upper half 12 has agenerally flat closed top 30, opposite side walls 32 and 34, oppositefront and rear walls 36 and 38 with turned out horizontal side flanges40 and 42 extending along the side walls 32 and 34 at the open end ofthe upper casing half 12. In this way the top and bottom casing sectionsor halves l2 and 14 are adapted to abuttingly engage each other alongahorizontal joint or parting line 43 to form the air conditioner cabinet.

In the embodiment of the present invention, the assembled halves form aself-contained room air conditioning unit adapted to be mounted in awindow opening. The unit includes right and left closure wings indicatedat 44' and 46 respectively with the left wing 46 shown extendedoutwardly from the left side walls 20 and 34 while the right wing 44 isshown in its retracted position. 1

'As best seen in-FIGS. 2 and 3, a sealed motor compressor unit 52 islocated on the left-hand side of the unit and a fan motor 54 is locatedon the right-hand side of the unit about equally spaced from thelongitudinal center line 55 of the'unit. The fan motor 54 drives apropeller type fan located within an opening in condenser shroud wall57, which draws in outside air through the side louvers 58 and toplouvers 59 and thence through a condenser 60 and out through thedischarge louvers 62and 63, integrally formed on the rear walls 38 and24 of the upper and lower halves, and exited into the outside air. Thefan motor 54 is positioned within the outside-air portion 61 of thecabinet and one shaft extension 64 drives and supports the condenser fan56, while the opposite'shaft extension 66 thereof drives and supportsthe centrifugal impeller or rotor 68 of the blower 70. The scroll shapedhousing 72 of the blower is secured to the room air side of the verticalpartition 74 which vertical partition 74 constitutes one side wall ofthe lower housing.

An evaporator is located in front of the inlet opening 81 of the blowerhousing inner side wall 82. The sealed motor compressor unit 52, thecondenser 60 and the evaporator 80 are connected together in anoperative refrigerant circuit such as shown for example in the Gould, etal. US. Pat. No. 2,945,362 issued July 19, 1960. For drawingsimplification purposes, no refrigerant lines have been shown andreference may be had to the Gould, et al., patent, the disclosure ofwhich is incorporated by reference herein.

the edge segments 84 when the two halves of the cabinet are locatedtogether. Thus, as seen in FIG. 8, an alternating L-shaped configurationin cross section is formed. Side flanges 42 and 28 are formed in asimilar manner. In this position when a C-shaped elongated holding clip88 of sheet metal is inserted on and off the side flanges 26 and 40 toalternately lockingly engage the edge segments 84 and 86, the binding ofthe C-clip is prevented because of possible slight misalignment of theflanges.

Support means for the motor-compressor housing 52 are provided in theform of a pair of opposed cupshaped retainers 90 and 92 with theretainer 90 integrally molded on the inner face of the lower half 14,bottom wall 16 and the retainer 92 integrally molded on the innersurface of the casing upper half 12. As seen in FIGS. 4 and 7, thecup-shaped retainer 90 is generally arcuate in plan having a bottom 94enclosed by a vertical inner peripheral wall 96 interrupted by a pair ofrounded inwardly directed radial flutes 97 and 98 defining a radiallyinwardly opening radial mortiselike slot 99 therebetween.

A yieldable or resilient rubber-like lower bushing element, representedat 106 in FIG. 7, has a cylindrical body shaped to be received in thelower annular retainer90. The lower bushing element 106 has a planarflat undersurface 108 and a concave upper surface 110 designed toconform with the dome-shaped bottom end wall 112 of the motor-compressorhousing 52. As seen in FIG. 7, the bushing element upper surface 110 isprovided with generally radial grooves 114 forming a plurality ofgenerally radial ribs 116, the inner ends of which define a rectangularcavity 118 having stepped shoulders I 19 and 120 at each end forreceiving a housing retaining clip 121 therein. As seen in FIG. 4, theclip 121 has a flanged-channel shape in cross section, secured as bywelding, on the lower end wall 112 of the housing 52.

Securing means in the form of integral resilient tabs 122 and 123 areprovided to extend into cavity 118 so as to snappingly engage thechannel portion 124 of the clip 121. As an optional securing meanshex-head bolt 126 may be employed ina counter-sunk recess 128 on thebushing element under-surface 108 for passage through a bushing 130lined hole 132 to threadingly engage aligned hole 134 in the clip 121.

With reference to FIG. 7, a pair of complemental tenons 136 and 138 areformed in the vertical cylindrical surface 139 of the bushing element106 either one of which may be received in the complemental mortiselikeslot 99 of the retainer 90. The purpose of this construction is to allowthe bushing element 106 to be received into the retainer 90 in either oftwo alternative positions depending upon whether tenon 136 or 138 isinserted in its mating mortise-like slot 99. Thus, the cabinet may bereadily fitted as an assembly line with alternative sized compressorhousings which are properly aligned within the casing lower half. Asseen in FIG. 3, the housing 52 has an electrical connection box 137extending therefrom which must be correctly oriented for connection ofits electrical leads and to be received in the space between condenserfan shroud wall 57 and the side wall 28 of the cabinet.

As viewed in FIG. 7, the equal angles A and B defined by the radialcenterlines of flutes 97 and 98 and mortise-like slot 99 include about12 degrees of arc symmetrically oriented on either side of the radialcenterline mortise-like slot 99. Consequently, by merely rotating thebushing 106 in a counterclockwise direction an amount so as to place thetenon 136 into slot 99 applicants about a 24 degree total arcuate changein location of the bushing 106 to provide for the connection of theelectrical and refrigerant lines of a smaller capacity compressor. Thus,during production bushing 106 and cup-shaped retainer may beinterchangeaby used on a single assembly line to readily mount analternate motor-compressor housing within the same cabinet lower half14.

As seen in FIG. 2, the upper retainer 92 is provided with a similarupper bushing 140 without the flutes 136, 138, which is attached to anidentical clip 142 located on the upper dome-shaped surface 144 of thehousing 52. It will be noted that retainer 92 has an inner peripheralwall 146 molded with a cone-shape while the bushing 140 has a conformingcone-shaped surface 148 thereby enabling ready insertion of th bushing140 into the upper opposed cup-shaped retainer 92 upon the placing ofthe casing upper half 12 in position on the casing lower half 14.

With reference to FIG. 2, it will be seen that the bottom wall 16 ofcasing 14 is formed with an upwardly extending fan motor supportingpedestal in the form of a hollow truncated pyramid whose upper surfaceis formed with a box-shaped recess 162 for receiving a resilient lowermotor pad 164 of rubber-like material having a conformingrectangular-shaped a box-shaped reduced shoulder portion 166 andrectangular base 168. As seen in FIG. 9 the base 168 has an arcuateshaped surface 170 for reception of the cylindricalshaped fan motorhousing 54 thereon. A transverse slot 172 is formed in the surface 170for receiving a transverse gusset key member or blade 174 suitablysecured to the fan motor housing 54 as by welding to locate the fanmotor housing against longitudinal movement of pad box-shaped shoulderportion 166 in recess 162. The blade 174 also assures correctpositioning of the electrical leads for the fan motor 54.

As viewed in FIGS. 2 and 6, the casing upper half 12 includes a pair ofintegrally molded parallel, transversely extending identical supportplates or ribs and 182, each having downwardly tapered edges 184, and186, 187, respectively. An upper fan mootor mounting pad identical tothe lower pad 164 is indicated in phantom at 164' in FIG. 6. The ribs180, 182 are longitudinally spaced a defined distance to receive inpress-fit fashion therebetween the rectangular shoulder portion 166' ofpad 164', while the horizontal edges 188 and 189 support the base 168,as shown in FIG. 2. As seen in FIG. 9, the upper pad 164 has a locatinggroove 192 at the rear of its shoulder portion 166 which receives avertical tongue member 198 therein to insure proper alignment of the pad164' when it is press-fitted on the upper housing prior to assembly. Thepads 164 and 164' on arcuate mounting surfaces 170, 170 conform to thecylindrical fan motor housing 54 to cushioningly support housing 54therebetween upon locating the upper casing half 12 in position on thelower casing half 14 and locking the halves together by the elongatedC-shaped clamps. Thus, the lower pad 164 allows for ready location ofthe fan motor housing 54 on the supporting member 160 while assuringcorrect positioning of the upper pad 164' on the upper casing half 14for engagement with the fan motor housing 54 during assembly of thecasing upper half 12 on the casing lower half 14.

it will be noted in FIG. 3 that the casing lower half 14 has verticallyextending grooves 202 and 204 integrally molded on side walls 18 and 20respectively, which align with grooves 206 and 208 integrally molded onthe side walls 32 and 34 respectively, of the casing upper half 12 onassembly of the cabinet. The purpose of the grooves 202, 204, 206 and208 is to receive the associated closure wings 44 and 46 shown inFIG. 1. As the closure wings form no part of the present invention, thedetails of their construction has been omitted from the presentapplication.

While the embodiment of the present invention as herein disclosedconstitutes a preferred form, it is to be understood that other formsmight be adopted.

We claim:

l. A window mounted room air conditioner having refrigeration apparatusincluding a hermetic motorcompressor unit and a housing therefor havingdomeshaped top and bottom end walls, a condenser, an evaporator, and afan motor and a cylindrical housing therefor, said refrigerationapparatus enclosed by a two-piece cabinet, said cabinet including upperand lower open-ended casing halves of molded synthetic plastic material,said casing lower half including a bottom wall bordered by substantiallyrectangularly re lated side and end walls, said casing lower half sidewalls terminating in turned-out side flanges, said casing upper halfincluding a top wall bordered by substantially rectangularly relatedside and end walls, said casing upper half side walls terminating inturned-out side flanges which match with the turned-out side flanges ofsaid casing lower half when the flanges are placed in paired abuttingrelation thereto, an elongated removable clip member for couplingtogether each pair of abutting flanges to join said casing halves at agenerally horizontal parting line thereby forming a room air conditionercabinet, said casing lower half bottom wall and said casing upper halftop wall having located on their respective inner surfaces opposed lowerand upper vertically aligned bushing retaining means integrally moldedtherewith, lower and upper resilient rubberlike bushing elements shapedfor reception in their associated lower and upper casing bushingretaining means, each said bushing element having a concave surface forreceiving in a complemental manner its associated motor-compressorhousing dome-shaped end wall, means for releasably attaching said upperand lower bushings on their respective motor-compressor housing top andbottom end walls, said casing lower half bottom wall and said casingupper half top wall having located on their respective inner surfacesopposed lower and upper vertically aligned pad mounting means, lower andupper identical fan motor housing resilient rubber-like mounting pads,each said pad including a reduced box-shaped shoulder portion and arectangular base portion having an arcuate-shaped surface conforming tosaid fan motor housing, said lower pad box-shaped shoulder portion beingreceived in said lower and upper casing pad retaining means,respectively, whereby upon said motor-compressor housing amd attachedupper and lower bushings being received in their respective casingretaining means and said fan motor housing being received by saidarcuate'shaped surfaces of said lower and upper mounting pads and saidelongated clip members coupling together their respective paired casingside flanges said motorcompressor housing and said fan' motor housingare yieldably mounted in said cabinet.

2. A window mounted room air conditioner having refrigeration apparatusincluding a hermetic motorcompressor unit and a housing therefor havingdomeshaped top and bottom end walls, a condenser, an evaporator, and afan motor for driving indoor and outdoor air circulating means, saidrefrigeration apparatus enclosed by a two-piece cabinet, said cabinetincluding upper and lower open-ended casing halves of molded syntheticplastic material, said casing lower half including a bottom wallbordered by substantially rectangularly related side and end walls, saidcasing lower half side walls terminating in turned-out side flanges,said casing upper half including a top wall bordered by substantiallyrectangularly related side and end walls, said casing upper half sidewalls terminating in turned-out side flanges which match with theturned-out side flanges of said casing lower half when said halves areplaced in paired abuttingrelation thereto, an elongated C-shaped clipmember for slidable insertion around each pair of abutting flanges tocouple together said casing halves at a generally horizontal partingline thereby forming a room air conditioner cabinet, said casing lowerhalf bottom wall and said casing upper half top wall having located ontheir respective inner surfaces opposed lower and upper cup-shapedvertically aligned retainers integrally molded therewith, lower andupper resilient bushing elements shaped for reception in theirassociated lower and upper casing retainers, each said bushing elementhaving a concave surface for receiving in a complemental manner itsassociated motor-compressor housing dome-shaped end wall, means forreleasably attaching said upper and lower bushings on their respectivemotor-compressor housing top and bottom end walls, whereby upon said.motoncompressor attached upper and lower bushings being received intheir respective cup-shaped casing retainers and said elongated clipmembers slidably inserted around their respective paired casing sideflanges said motor-compressor housing is yieldably mounted in saidcabinet by compressing said upper and lower bushings between theirassociated cup-shaped casing retainers and said motor-compressor housingtop and bottom end walls.

3. A window mounted room air conditioner having refrigeration apparatusincluding a hermetic motorcompressor unit and a housing therefor havingdomeshaped top and bottom end walls, a condenser, an evaporator, and afan motor for driving indoor and outdoor air circulating means, saidrefrigeration apparatus enclosed by a two-piece cabinet, said cabinetincluding upper and lower open-ended casing halves of molded syntheticplastic material, said casing lower half including a bottom wallbordered by substantially rectangularly related side and end walls, saidcasing lower half side walls terminating in turned-out side flanges,said casing upper half including a top wall bordered by substantiallyrectangularly related side and end walls, said casing upper half sidewalls terminating in turned-out side flanges which match with theturned-out side flanges of said casing lower half when said halves areplaced in paired abutting relation thereto, removable coupling means forcoupling each pair of abutting flanges to join said casing halves at agenerally horizontal parting line thereby forming a room air conditionercabinet, said casing lower half bottom wall and said casing upper halftop wall having located on their respective inner surfaces opposed lowerand upper annular vertically aligned retainers integrally moldedtherewith, lower and upper resilient bushings having cylindrical bodyportions for reception in their associated lower and upper casingretainers, said lower annular retainer having its inner peripheral wallinterrupted by a pair of spaced flutes defining an inwardly openingradial slot therein, said lower bushing having a pair of spacedtenon-like radial members formed on its cylindrical body each of whichis shaped for alternate reception in said radial slot, whereby saidlower bushing may be received in said lower annular retainer in eitherof two alternative positions depending upon which tenonlike member isinserted in said radial slot such that said lower and upper casingtogether with said bushings may be used interchangeably to exactlyposition at least two alternative sized motor-compressor units in saidtwopiece cabinet, each said bushing having a concave surface forreceiving in a complemental manner its associated motor-compressorhousing dome-shaped end wall, means for releasably attaching said upperand lower bushings on their respective motor-compressor housing top andbottom end walls, whereby upon said motor-compressor and its attachedupper and lower bushings being received in their respective annularretainers and said paired casing side flanges being joined by saidcoupling means either of two alternative sized motor-compressor housingsmay be fixably retained in a cushioned manner within said cabinet.

4. A window mounted room air conditioner having refrigeration apparatusincluding a hermetic motorcompressor unit and a housing therefor havingdomeshaped top and bottom end walls, a condenser, an evaporator, and afan motor and a cylindrical housing therefor, said refrigerationapparatus enclosed by a two-piece cabinet, said cabinet including upperand lower open-ended casing halves of molded synthetic plastic material,said casing lower half including a bottom wall bordered by substantiallyrectangularly related side and end walls, said casing lower half sidewalls terminating in turned-out side flanges, said casing upper halfincluding a top wall bordered by substantially rectangularly relatedside and end walls, said casing upper half side walls terminating inturned-out side flanges which match with the turned-out side flanges ofsaid casing lower half when the flanges are placed in paired abuttingrelation thereto, an elongated C-shaped clip member for slidableinsertion around each pair of abutting flanges to join said casinghalves at a generally horizontal parting line to form a room airconditioner cabinet, said casing lower half bottom wall and said casingupper half top wall having located on their respective inner surfacesopposed lower and upper cupshaped vertically aligned retainersintegrally molded therewith, lower and upper resilient rubber-likebushing elements shaped for reception in their associated said lower andupper casing retainers, each said bushing element having a concavesurface for receiving in a complemental manner its associatedmotorcompressor housing dome-shaped end wall, means for releasablyattaching said upper and lower bushings on their respectivemotor-compressor housing top and bottom end walls, said casing lowerhalf bottom wall having located on its inner surface an upwardlyextending pedestal in the form of a hollow truncated pyramid integrallymolded therewith the upper surface of which is formed with a box-shapedrecess, said casing upper half bottom wall having located on its innersurface a pair of longitudinally spaced, transversely extending supportribs, lower and upper identical fan motor housing resilient rubber-likemounting pads, each said pad including a reduced box-shaped shoulderportion and a rectangular base portion having an arcuate-shaped surfaceconforming to said fan motor housing, said lower pad box-shaped shoulderportion of a complemental size so as to be retained in said truncatedpyramid box-shaped recess, said upper and box-shaped shoulder portionsized so as to be retained between said pair of support ribs with itsrectangular base supported on the free end of said ribs in opposedvertical alignment with said lower casing pad, whereby upon saidmotor-compressor housing and attached upper and lower bushings beingreceived in their respective casing cup-shaped retainers and said fanmotor housing being received on the arcuate surfaces of said lower andnet.

1. A window mounted room air conditioner having refrigeration apparatusincluding a hermetic motor-compressor unit and a housing therefor havingdome-shaped top and bottOm end walls, a condenser, an evaporator, and afan motor and a cylindrical housing therefor, said refrigerationapparatus enclosed by a twopiece cabinet, said cabinet including upperand lower open-ended casing halves of molded synthetic plastic material,said casing lower half including a bottom wall bordered by substantiallyrectangularly related side and end walls, said casing lower half sidewalls terminating in turned-out side flanges, said casing upper halfincluding a top wall bordered by substantially rectangularly relatedside and end walls, said casing upper half side walls terminating inturned-out side flanges which match with the turned-out side flanges ofsaid casing lower half when the flanges are placed in paired abuttingrelation thereto, an elongated removable clip member for couplingtogether each pair of abutting flanges to join said casing halves at agenerally horizontal parting line thereby forming a room air conditionercabinet, said casing lower half bottom wall and said casing upper halftop wall having located on their respective inner surfaces opposed lowerand upper vertically aligned bushing retaining means integrally moldedtherewith, lower and upper resilient rubber-like bushing elements shapedfor reception in their associated lower and upper casing bushingretaining means, each said bushing element having a concave surface forreceiving in a complemental manner its associated motor-compressorhousing domeshaped end wall, means for releasably attaching said upperand lower bushings on their respective motor-compressor housing top andbottom end walls, said casing lower half bottom wall and said casingupper half top wall having located on their respective inner surfacesopposed lower and upper vertically aligned pad mounting means, lower andupper identical fan motor housing resilient rubber-like mounting pads,each said pad including a reduced box-shaped shoulder portion and arectangular base portion having an arcuate-shaped surface conforming tosaid fan motor housing, said lower pad box-shaped shoulder portion beingreceived in said lower and upper casing pad retaining means,respectively, whereby upon said motor-compressor housing amd attachedupper and lower bushings being received in their respective casingretaining means and said fan motor housing being received by saidarcuate-shaped surfaces of said lower and upper mounting pads and saidelongated clip members coupling together their respective paired casingside flanges said motorcompressor housing and said fan motor housing areyieldably mounted in said cabinet.
 2. A window mounted room airconditioner having refrigeration apparatus including a hermeticmotor-compressor unit and a housing therefor having dome-shaped top andbottom end walls, a condenser, an evaporator, and a fan motor fordriving indoor and outdoor air circulating means, said refrigerationapparatus enclosed by a two-piece cabinet, said cabinet including upperand lower open-ended casing halves of molded synthetic plastic material,said casing lower half including a bottom wall bordered by substantiallyrectangularly related side and end walls, said casing lower half sidewalls terminating in turned-out side flanges, said casing upper halfincluding a top wall bordered by substantially rectangularly relatedside and end walls, said casing upper half side walls terminating inturned-out side flanges which match with the turned-out side flanges ofsaid casing lower half when said halves are placed in paired abuttingrelation thereto, an elongated C-shaped clip member for slidableinsertion around each pair of abutting flanges to couple together saidcasing halves at a generally horizontal parting line thereby forming aroom air conditioner cabinet, said casing lower half bottom wall andsaid casing upper half top wall having located on their respective innersurfaces opposed lower and upper cup-shaped vertically aligned retainersintegrally molded therewith, lower and upper resilient bushing elementsshapeD for reception in their associated lower and upper casingretainers, each said bushing element having a concave surface forreceiving in a complemental manner its associated motor-compressorhousing dome-shaped end wall, means for releasably attaching said upperand lower bushings on their respective motor-compressor housing top andbottom end walls, whereby upon said motor-compressor attached upper andlower bushings being received in their respective cup-shaped casingretainers and said elongated clip members slidably inserted around theirrespective paired casing side flanges said motor-compressor housing isyieldably mounted in said cabinet by compressing said upper and lowerbushings between their associated cup-shaped casing retainers and saidmotor-compressor housing top and bottom end walls.
 3. A window mountedroom air conditioner having refrigeration apparatus including a hermeticmotor-compressor unit and a housing therefor having dome-shaped top andbottom end walls, a condenser, an evaporator, and a fan motor fordriving indoor and outdoor air circulating means, said refrigerationapparatus enclosed by a two-piece cabinet, said cabinet including upperand lower open-ended casing halves of molded synthetic plastic material,said casing lower half including a bottom wall bordered by substantiallyrectangularly related side and end walls, said casing lower half sidewalls terminating in turned-out side flanges, said casing upper halfincluding a top wall bordered by substantially rectangularly relatedside and end walls, said casing upper half side walls terminating inturned-out side flanges which match with the turned-out side flanges ofsaid casing lower half when said halves are placed in paired abuttingrelation thereto, removable coupling means for coupling each pair ofabutting flanges to join said casing halves at a generally horizontalparting line thereby forming a room air conditioner cabinet, said casinglower half bottom wall and said casing upper half top wall havinglocated on their respective inner surfaces opposed lower and upperannular vertically aligned retainers integrally molded therewith, lowerand upper resilient bushings having cylindrical body portions forreception in their associated lower and upper casing retainers, saidlower annular retainer having its inner peripheral wall interrupted by apair of spaced flutes defining an inwardly opening radial slot therein,said lower bushing having a pair of spaced tenon-like radial membersformed on its cylindrical body each of which is shaped for alternatereception in said radial slot, whereby said lower bushing may bereceived in said lower annular retainer in either of two alternativepositions depending upon which tenon-like member is inserted in saidradial slot such that said lower and upper casing together with saidbushings may be used interchangeably to exactly position at least twoalternative sized motor-compressor units in said two-piece cabinet, eachsaid bushing having a concave surface for receiving in a complementalmanner its associated motor-compressor housing dome-shaped end wall,means for releasably attaching said upper and lower bushings on theirrespective motor-compressor housing top and bottom end walls, wherebyupon said motor-compressor and its attached upper and lower bushingsbeing received in their respective annular retainers and said pairedcasing side flanges being joined by said coupling means either of twoalternative sized motor-compressor housings may be fixably retained in acushioned manner within said cabinet.
 4. A window mounted room airconditioner having refrigeration apparatus including a hermeticmotor-compressor unit and a housing therefor having dome-shaped top andbottom end walls, a condenser, an evaporator, and a fan motor and acylindrical housing therefor, said refrigeration apparatus enclosed by atwo-piece cabinet, said cabinet including upper and lower open-endedcasing halves of molded synthetic plastic material, said casing lowerhAlf including a bottom wall bordered by substantially rectangularlyrelated side and end walls, said casing lower half side wallsterminating in turned-out side flanges, said casing upper half includinga top wall bordered by substantially rectangularly related side and endwalls, said casing upper half side walls terminating in turned-out sideflanges which match with the turned-out side flanges of said casinglower half when the flanges are placed in paired abutting relationthereto, an elongated C-shaped clip member for slidable insertion aroundeach pair of abutting flanges to join said casing halves at a generallyhorizontal parting line to form a room air conditioner cabinet, saidcasing lower half bottom wall and said casing upper half top wall havinglocated on their respective inner surfaces opposed lower and uppercup-shaped vertically aligned retainers integrally molded therewith,lower and upper resilient rubber-like bushing elements shaped forreception in their associated said lower and upper casing retainers,each said bushing element having a concave surface for receiving in acomplemental manner its associated motor-compressor housing dome-shapedend wall, means for releasably attaching said upper and lower bushingson their respective motor-compressor housing top and bottom end walls,said casing lower half bottom wall having located on its inner surfacean upwardly extending pedestal in the form of a hollow truncated pyramidintegrally molded therewith the upper surface of which is formed with abox-shaped recess, said casing upper half bottom wall having located onits inner surface a pair of longitudinally spaced, transverselyextending support ribs, lower and upper identical fan motor housingresilient rubber-like mounting pads, each said pad including a reducedbox-shaped shoulder portion and a rectangular base portion having anarcuate-shaped surface conforming to said fan motor housing, said lowerpad box-shaped shoulder portion of a complemental size so as to beretained in said truncated pyramid box-shaped recess, said upper andbox-shaped shoulder portion sized so as to be retained between said pairof support ribs with its rectangular base supported on the free end ofsaid ribs in opposed vertical alignment with said lower casing pad,whereby upon said motor-compressor housing and attached upper and lowerbushings being received in their respective casing cup-shaped retainersand said fan motor housing being received on the arcuate surfaces ofsaid lower and upper mounting pads and the elongated clip membersslidably inserted around their respective paired casing side flangessaid motor-compressor housing and said fan motor housing are yieldablymounted in said cabinet.